Rockbox mail archiveSubject: Re: firmware/serial.c mod problem. please help.
From: [IDC]Dragon (idc-dragon_at_gmx.de)
> the idle serial level is 1, the start bit is 0...
On TTL, 1 is high and 0 is low.
> are the RS232 levels inverted compared to TTL?
> In my case, I connected the pic output directly to the serial Rx of my
This is strange. Maybe the PIC has an option to invert its TX?
> As the serial driver is in software, I dont remember the levels I used,
Ah, that explains.
> Does this mean I need at least an inverter (or a rs232 adapter) for the
Yes. As a minimum solution, a transistor can do it.
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Page was last modified "Jan 10 2012" The Rockbox Crew